Cleansing compound.



-- Kings, city and State of New York, have i following is a pound stains UNITED STATES PATENT OFFICE.

HOWARD BERKEY BISHOP, OF NEW YORK, Nu Y. CLEANSING COMPOUND.

, Patented May 1 1, 1909. Serial No. 448,701,

N 0. 921,360. Specification of Letters Patent.

Application filed August 16, 1908.

T 0 all whom it may concern-.- I

Be it known that I, I'IOWARD BERKEY 1 lb. of it to about every 1000 lbs. of the BisHoP, a citizen of the United States, resij laundry Water (Without soap), this treat+ dent of the borough of Brooklyn, county of l ment receding immediately the usual addition 0 bluing to the laund water.

invented certain new and useful Improve- The mixture above speci 1ed removes rust mentsin Cleansing Compounds, of which the stains and some others without in jury to specification. the fabrics, which is an entirely unexpected invention relates to a cleansing com- I particularly adapted to remove rust without injuring fabrics.

As a specific instance of my'invention, I will give the following mixture, which is particularly adapted for use on a large scale, I say in laundries.

15 parts (by weight) 30 parts (by weight M result, since hydrofluoric acid and many other soluble compounds-of fiuorin are commonly believed to have a strong destructive action.

I claim as my invention:

1. As a cleansing compound, a mixture containing acetic acid, sulfuric acid-and 3 hydrofiuosllicic acid.

glacial acetic acid (100 9 sulfuric acid (100 9 parts (by weight hydrofluosilicic acid (100 consisting of about 15 parts of acetic acid, 46 Parts y Weight Water- 30 parts of sulfuric acid, 9 art of hydrofluosilicic acid and 46 parts 0 water. 100 parts (by wglght) In testimony whereof I have hereunto set my hand in the presence of two subscribmg witnesses.

HOWARD BERKEY BISHOP.

The water is to be understood to include the water which comes with the acids, and that added to the mixture. This particular mixture, while concentrated so as to reduce charges for shipment, and to make its storage and handling more convenient, will Witnesses: not attack glass and may therefore be kept i JOHN A. KEHLENBEOK, in ordinary vessels. LEIN.

FRED A. K

11 using this mixture I would add about s a cleansing compound, a mixture 

